crypto/blake2s_generic.c

   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /*
   3  * shash interface to the generic implementation of BLAKE2s
   4  *
   5  * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
   6  */
   7
   8 #include <crypto/internal/blake2s.h>
   9 #include <crypto/internal/hash.h>
  10
  11 #include <linux/types.h>
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14
  15 static int crypto_blake2s_update_generic(struct shash_desc *desc,
  16                                          const u8 *in, unsigned int inlen)
  17 {
  18         return crypto_blake2s_update(desc, in, inlen, true);
  19 }
  20
  21 static int crypto_blake2s_final_generic(struct shash_desc *desc, u8 *out)
  22 {
  23         return crypto_blake2s_final(desc, out, true);
  24 }
  25
  26 #define BLAKE2S_ALG(name, driver_name, digest_size)                     \
  27         {                                                               \
  28                 .base.cra_name          = name,                         \
  29                 .base.cra_driver_name   = driver_name,                  \
  30                 .base.cra_priority      = 100,                          \
  31                 .base.cra_flags         = CRYPTO_ALG_OPTIONAL_KEY,      \
  32                 .base.cra_blocksize     = BLAKE2S_BLOCK_SIZE,           \
  33                 .base.cra_ctxsize       = sizeof(struct blake2s_tfm_ctx), \
  34                 .base.cra_module        = THIS_MODULE,                  \
  35                 .digestsize             = digest_size,                  \
  36                 .setkey                 = crypto_blake2s_setkey,        \
  37                 .init                   = crypto_blake2s_init,          \
  38                 .update                 = crypto_blake2s_update_generic, \
  39                 .final                  = crypto_blake2s_final_generic, \
  40                 .descsize               = sizeof(struct blake2s_state), \
  41         }
  42
  43 static struct shash_alg blake2s_algs[] = {
  44         BLAKE2S_ALG("blake2s-128", "blake2s-128-generic",
  45                     BLAKE2S_128_HASH_SIZE),
  46         BLAKE2S_ALG("blake2s-160", "blake2s-160-generic",
  47                     BLAKE2S_160_HASH_SIZE),
  48         BLAKE2S_ALG("blake2s-224", "blake2s-224-generic",
  49                     BLAKE2S_224_HASH_SIZE),
  50         BLAKE2S_ALG("blake2s-256", "blake2s-256-generic",
  51                     BLAKE2S_256_HASH_SIZE),
  52 };
  53
  54 static int __init blake2s_mod_init(void)
  55 {
  56         return crypto_register_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  57 }
  58
  59 static void __exit blake2s_mod_exit(void)
  60 {
  61         crypto_unregister_shashes(blake2s_algs, ARRAY_SIZE(blake2s_algs));
  62 }
  63
  64 subsys_initcall(blake2s_mod_init);
  65 module_exit(blake2s_mod_exit);
  66
  67 MODULE_ALIAS_CRYPTO("blake2s-128");
  68 MODULE_ALIAS_CRYPTO("blake2s-128-generic");
  69 MODULE_ALIAS_CRYPTO("blake2s-160");
  70 MODULE_ALIAS_CRYPTO("blake2s-160-generic");
  71 MODULE_ALIAS_CRYPTO("blake2s-224");
  72 MODULE_ALIAS_CRYPTO("blake2s-224-generic");
  73 MODULE_ALIAS_CRYPTO("blake2s-256");
  74 MODULE_ALIAS_CRYPTO("blake2s-256-generic");
  75 MODULE_LICENSE("GPL v2");